Viessmann VITODENS 100-W Installation And Service Instructions Manual page 38

Commissioning, inspection, maintenance
Further details regarding the individual steps
100
D
90
C
B
80
70
A
60
50
-25 -20 -15
Outside temperature in °C
A Max. speed 19 kW
B Max. speed 26 kW
C Max. speed 30 kW
Changing the maximum speed
Only when operating with an outside
temperature sensor.
38
-10 -5 0 5
r
E
10 15 20 25
D Max. speed 35 kW
E Min. speed
1. Switch ON the ON/OFF switch.
2. Turn both rotary selectors "tw" and
"tr" simultaneously to their central
positions.
The display shows "SERV".
(cont.)